If I were to replace the plates and gaskets on a plate and frame heat exchanger, do I lose the ASME certification? Are there provisions for maintenance work in the code?
ASME Certification is for new construction only so you do not lose the certification that was originally granted by the ASME Boiler and Pressure Code. Repair and maintenance work is often done to an installed unit. Repairs can be carried-out in the field providing the service provider is a holder of an ASME R stamp (repair stamp) and follows the procedure in accordance with the Code. You might check with your Jurisdiction to see if they have any rules concerning what repair code should be followed.
